Question

A single lymphocyte has thousands of antigen receptor sites on it. These are all specific to:

a) One epitope

b) One antigen

c) Thousands of epitopes

d) Thousands of antigens

Following an infection, the body produces cells that facilitate a rapid response if the body becomes infected again by the same pathogen. The rapid response to re-infection arises because of:

A. Antigens
B. Antibodies

C. Memory cells

D. Plasma cells

Which immune system occurs in both invertebrates and vertebrates and does not involve immunological memory?

A. The innate immune system

B. The adaptive immune system

Answer 1

Answer :

A single lymphocyte has thousands of antigen receptor sites on it. These are all specific to --- (d) Thousands of antigens.

Following an infection, the body produces cells that facilitate a rapid response if the body becomes infected again by the same pathogen. The rapid response to re-infection arises because of --- (C). Memory cells.

(A). The innate immune system --- occurs in both invertebrates and vertebrates and does not involve immunological memory.